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exp_klingel2022('fig3'); crashes in Octave
Tested again, both Linux and Windows Octave and both works. I would say the issue is solved.
demo_baumgartner2014 fails in Octave on Linux
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demo_baumgartner2014 Linux Octave fix: Giving a warning and instructions of the depencies
pkg install -purge statistics or sudo apt install octave-statistics helps for the issue
Tested in Kubuntu VM and Octave version 8.4.0 and it works without issues